🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS205366, with the network's IPv6 and DNSSEC adoption and its observed prefixes. An autonomous system is the routing identity of a hosting company or ISP. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.

📈 Domains over time#

109 days
011222026-07-012026-08-242026-10-17
1 latest0 over 109 days

Active .dk domains whose website address (A record) is announced by AS205366, counted once a day.

🌐 AS205366 at a glance#

Drees & Sommer SE

AS205366 is announced by Drees & Sommer SE (Germany) and currently hosts 1 .dk domain in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 1 unique IPv4 address on this network, and the domains currently sit in 1 IPv4 CIDR block covering roughly 512 addresses of IPv4 space.

We have yet to observe any IPv6 (AAAA) hosting on this AS.

We have not observed any nameservers or mail exchangers for .dk domains on this AS — the domains hosted here run their DNS and mail from other networks.

On the security side, 0 of the domains hosted here (0.0%) validate as DNSSEC-secure — below the zone-wide average for domains with a web address, 70.5%. See how this AS compares on the ASN statistics page, or drill into the CIDR list below the results.

🛰️ Upstream providers of AS205366#

via ipbot.dk

dreso_de-ffm_rz1 Drees & Sommer SE announces 3 prefixes (3 IPv4, 0 IPv6) and reaches the internet through 2 upstream networks.

UpstreamNamePower
AS3320DTAG Deutsche Telekom AG
100.0%
AS8220COLT Technology Services Group Limited
97.0%

Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.

Found 1 domain matching 205366
DomainIPASNISP / OrgCountry
dreso.dk 185.201.108.41 AS205366 Drees & Sommer SE 🇩🇪 Germany

📡 Known CIDRs#

1 CIDR
CIDRDomains
185.201.108.0/23 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone